types: move graphql type to /types

tsconfig.json

@@ -17,7 +17,7 @@
     "incremental": true,
     "typeRoots": ["node_modules/@types", "@types"]
   },
-  "files": ["@types/graphql.d.ts"],
+  "files": ["types/graphql.d.ts"],
   "include": ["next-env.d.ts", "**/*.ts", "**/*.tsx"],
   "exclude": ["node_modules"]
 }